Since a large number of power electronic rectifier devices are used in industrial production and daily life, these devices producing numerous harmonic current while generating high energy, which not only causes pollution to the power grid environment, but also adversely affects production equipment. Therefore, filter capacitors can be used to eliminate harmonics to improve grid quality.

DIN's power electronic film capacitors have high working voltage range, low dissipation, low ESL, good self-healing and long life, widely used in frequency conversion equipment.

AC filter capacitors and power factor compensation capacitors have the same features as power electronic capacitors, with full dry and safety explosion-proof devices designed, wildly used in AC filter devices and compensation devices.